Meaning of absorbance

ab•sorb•ance

Pronunciation: (ab-sôr'buns, -zôr'-), [key]
— n. Physics.
  1. the capacity of a substance to absorb radiation, expressed as the common logarithm of the reciprocal of the transmittance of the substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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